Net Income Per Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Percentage of Limited Partners interest in Company	99.00%
Net income per unit, basic and diluted [Abstract]
Net income attributable to AB Unitholders	$ 831,813	$ 1,148,623	$ 865,952
Weighted average units outstanding—basic (in units)	273,943,000	271,729,000	269,058,000
Dilutive effect of compensatory options to buy AB Holding Units (in units)	1,000	11,000	27,000
Weighted average units outstanding - diluted (in units)	273,944,000	271,740,000	269,085,000
Basic net income per AB Unit (in dollars per unit)	$ 3.01	$ 4.18	$ 3.19
Diluted net income per AB Unit (in dollars per unit)	$ 3.01	$ 4.18	$ 3.19
Anti-dilutive options excluded from diluted net income (in units)	0	0	29,056,000
AB Holding | AllianceBernstein Corporation
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Percentage of General Partnership interest in company	1.00%